Toyota Engineering Standard

TOYOTA ENGINEERING STANDARD NO.: TITLE: CLASS:

TSM0500G Flammability test method for interior non-metallic materials

C1

Established/Revised:

Rev. 12

( Oct. 2010 )

This standard has been revised as a result of the following changes: (1) consistency has been ensured with international standard (ISO 3795) and Chinese standard (GB8410-2006); (2) test piece conditioning regarding humidity has been changed; (3) test environmental conditions have been changed; (4) tolerance has been added to distance between bench marks (A) and (B); and (5) natural gas has been added to gas types.

Prepared and Written by: Organic Material Dept. Vehicle Material Engineering Div.

Design Quality Innovation Div. ⒸTOYOTA MOTOR CORPORATION

For Limited Distribution

Do Not Reproduce

TOYOTA ENGINEERING STANDARD

TSM0500G

CLASS

C1

Flammability test method for interior non-metallic materials

1. Scope This standard covers the test method for flammability of non-metallic materials used for automobile interior. 2. Flammability Test Method 2.1 Test Apparatus This shall consist of the metal cabinet and burner(1) shown in Fig. 1 and U-shape clamp shown in Fig. 2. Note (1): When a test corresponding to Chinese regulation (GB8410-2006 Flammability of automotive interior materials) is conducted, the test may be conducted using a test device specified in "4.2.1 A test cabinet which is made of steel plate" of GB8410-2006. In such a case, a statement saying that the test device corresponding to GB8410-2006 is used shall be written in the test report.

Fig. 1 (Unit: mm) NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation..

1 / 9

Rev. 12 Oct. 2010

For Limited Distribution

Do Not Reproduce

TOYOTA ENGINEERING STANDARD

TSM0500G

Remark: A: ventilation clearance B: ventilation hole C: test piece (with the material surface facing downward) D: guide E: guide support (on the door side, remove the portion preventing door movement.) F: door G: inspection window H: burner I: ventilation leg 2.1.1 Cabinet Width shall be 380 5 mm, depth 205 5 mm and height 355 5 mm. Provide on the front a heat-resistant glass window to inspect inside and on one side a door enabling insertion and removal of the test piece and burner. Drill ventilation holes on the top and bottom plates, and place a guide to hold the test piece inside. 2.1.2 Burner This shall be a Bunsen burner with the bore of 9.5 propane gas (LPG).

0.5 mm. Use natural gas, city gas, or liquefied

2.1.3 U-Shape Clamp Use two pieces with dimensions as shown in Fig. 2. Place bench marks (A) and (B) as shown in the same diagram. The clamp shall be made of steel whose surface is provided with corrosion resistant plating.

Fig. 2 (Unit: mm) 2.2 Test Method 2.2.1 Test Piece Dimensions A test piece shall be 350 mm long, 100 mm wide and 12 mm thick. Cut out test pieces from the practical product whenever possible. If it is not possible to cut out this size of rectangular parallelepiped because of the dimensions or shape of the product, determine the possible test piece dimensions in accordance with the provisions in Section 2.2.2.

NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation..

2 / 9

Rev. 12 Oct. 2010

For Limited Distribution

Do Not Reproduce

TOYOTA ENGINEERING STANDARD

TSM0500G

2.2.2 Test Piece Cut-Out and Processing Methods Cut out and process five test pieces according to the following procedures. (1) Choose a flat portion of the interior material (if the flat portion does not permit cut-out of test pieces in the dimensions specified in Section 2.2.1 because of the material shape etc., choose a gently curved portion) and cut out pieces in the length and width specified in Section 2.2.1 to the depth of 12 mm. If bonded joints of two different interior materials exist within this depth, obtain test pieces in either of the following methods depending on the method of bonding. (a) All contact points are bonded with adhesive or the like. Considering the interior material consisting of two types of material bonded to each other as a single composite, cut out pieces as bonded to the depth of 12 mm from the cabin surface. (b) None of the contact points are bonded with adhesive or the like. Separately cut out the cabine surface material and the material underneath.

Fig. 3 (Unit: mm)

(2)

(3)

(4)

(5)

(Explanation of Fig. 3) Material A is not bonded to material B. Therefore, cut out test pieces separately from A and B. Material B is within 12 mm from the cabin surface and is bonded to material C at all contact points between them. Thus, test pieces should be cut out from materials B and C as a single composite. In cutting out test pieces, be sure to make cuts to the depth of 12 mm toward the interior of material C as shown in the diagram. When it is difficult to cut out test pieces in the specified dimensions because of the dimensions or shape of the product, cut out test pieces from the product according to the foldowing method. Test piece length or width possible to cut out from the product does not meet the specification: if it is possible to cut out to 293 mm or more in length and 25 mm or more in width, cut out from the product. For products whose thickness is less than 12 mm, cut out to the product thickness. When the product shape does not permit the cutting-out of flat test pieces, it is permissible to use a flat plate consisting of the same materials and construction as the subject interior material. The thickness of this plate shall be equal to or less than that of minimum thickness in the flattest portion of the subject interior material. If a certain tendency is noted with the direction of expansion of the burning area when the subject interior material is burning, cut out test pieces so that their longitudinal direction equals that direction in which burning proceeds fastest. When the interior material has soft fiber or tassels on the surface, before cutting out test pieces, place the material on a flat plane and draw a comb with a row of 7 to 8 round-tipped teeth per 25 mm through it twice.

NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation..

3 / 9

Rev. 12 Oct. 2010

For Limited Distribution

Do Not Reproduce

TOYOTA ENGINEERING STANDARD

TSM0500G

2.3 Test Conditions 2.3.1 Test Piece Conditioning (1) Original state Leave test pieces in the atmosphere controlled at 23 2 and 50 5% RH for 24 h or longer but within 168 h. (2) After heat aging(2) 2 (3) and let Place test pieces in a hot-air circulation type thermoregulator adjusted at 70 them stand for 336 h. Take out the test pieces from the thermoregulator, and leave them in the atmosphere controlled at 20 5 and 50 5% RH for 24 h or longer. Notes: (2) It is permitted to skip testing under this condition if the quality of a test piece has been guaranteed after heat aging at 70 for 336 h. (3) Exposure at a temperature higher than 70 for 336 h is permitted if it is not possible to conduct testing at 70 due to the capability of test equipment or the like. 2.3.2 Installation of Test Piece Sandwich one of the test pieces prepared in Section 2.3.1 between two U-shape clamps(4) shown in Fig. 2 and hold the clamps on the guide in the cabinet shown in Fig. 1. Note (4): When the test piece width is 50 mm or less or when test pieces cannot be horizontally held because of softening and deformation as a result of burning, provide wire to the bottom clamp. The wire shall be heat-resistant and approx. 0.25 mm thick. Wind it around the clamp at an interval of 25 mm perpendicularly to the clamp longitudinal direction as shown in Fig. 4. Orient the test piece front face downward. Example materials for which wire-provided U-shape clamps should be used to prevent abnormal burning include genuine leather, PVC film and leather, fabrics, rugs, various types of foam, materials laminated with foams, and rubber. Examples not requiring such clamps include various types of boards and hard resin. If abnormal burning occurs even to these materials, however, wire-provided clamps may be used.

Fig. 4 (Unit: mm) 2.3.3 Adjustment of Burner Flame Adjust burner flame height to 38 is fed.

2 mm via the gas adjustment valve under the condition that no air

2.3.4 Test Environmental Conditions Carry out tests in the atmosphere of 23 2

and 50 5 % RH.

NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation..

4 / 9

Rev. 12 Oct. 2010

For Limited Distribution

Do Not Reproduce

TOYOTA ENGINEERING STANDARD

TSM0500G

2.3.5 Test If flammability differs depending on test-piece directions, conduct preliminary test for all directions to determine the direction in which the burning rate is the highest, and carry out the test for this direction. (1) Use five test pieces for the test. (2) If the maximum burning rate exceeds 60 mm/min in (1), add another five test pieces. (3) If the maximum burning rate exceeds 80 mm/min in (2), add another 20 test pieces. (4) If the maximum burning rate exceeds 80 mm/min in (1), add another 25 test pieces.

Fig. 5 (Unit: mm) Adjust distance between the test piece bottom surface and the burner nozzle to 19 mm (Fig. 5). Place the burner nozzle center beneath the clamp opening center so as to expose the test piece front face to the flame for 15 s. Measure burning time for the flame to reach from bench mark (A) to (B)(5) and calculate the burning rate using equation (1)(6).

If the flame goes out naturally before reaching bench mark (B), measure the distance to the point where the flame has gone out and burning time for calculation.

NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation..

5 / 9

Rev. 12 Oct. 2010

For Limited Distribution

Do Not Reproduce

TOYOTA ENGINEERING STANDARD

TSM0500G

Notes: (5) If flashing occurs to the test piece surface, calculate the burning rate under that condition. However, this shall not apply to flashing on the test piece cut sections. Also, in spite of the bottom surface or upper surface of the test piece, in the case where the burning progresses while flash point is divided into one or more, measure the burning time until the respective flash point stops and record a burning rate of a flash point that acquires the longest burning distance in the end. (6) After test, before beginning the next cycle of test, make sure that temperature and humidity in the cabinet and clamp temperature have returned to the levels in Section 2.3.4 and that smoke does not remain inside, and remove burning residue. 2.4 Test Results Report Test results shall be reported in the form shown in Attached Fig. 1. However, in terms of the overseas supplier, Attached Fig. 2 may be used. In such a case, if the burning rate exceeds 100 mm/min, Attached Fig. 3 shall be submitted at the same time. Reporting procedure (1) Round burning rate values to the nearest integer, rounding up the tenth and neglecting the 100th and below. (2) For temperature and relative humidity, round measurements to the nearest integer, rounding up the tenth. (3) For storage time, round to hours, neglecting minutes and lower. (4) For burning distance, round to the nearest integer, rounding up the tenth. (5) For burning time, round to the nearest integer, rounding down the tenth. (6) For test pieces which stop burning before burning time reaches 60 s and whose burning distance is less than 50 mm, enter - in the columns of burning time, distance and rate. When burning exceeds bench mark (A) and stops before reaching 60 s and less than 50 mm and when the burning rate is 250 mm/min, however, write in the measurements. (7) When the test piece does not ignite or when burning stops before reaching bench mark (A), enter / in the columns of burning time and distance and 0 in the column of burning rate. Table 1 No. 1 2 3 4

Test report Items to be reported Burning Burning Burning time distance rate

Burning state/condition Test piece does not burn or burning stops before it reaches the bench mark [A]. In the case the burning distance is less than 50 mm and the burning time is less than 60 s In the case the burning distance is less than 50 mm and the burning time is less than 60 s, and the burning exceeds the bench mark [A] and the burning rate is 250 mm/min or more Other than above No.1, 2 and 3 cases

/

/

0 (zero)

---

---

---

Enter the normal calculation result (see Section 2.3.5.)

(8) Except for the following cases, enter the maximum burning rate of all test pieces tested in the box for the burning rate maximum value. ① If all boxes of burning rate are all "0", enter "nonflammable" in the box. ② If all boxes of burning rate are all "-", enter "self-extinction" in the box. ③ If all boxes of burning rate are "0" and "-", enter "self-extinction" in the box.

NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation..

6 / 9

Rev. 12 Oct. 2010

For Limited Distribution

Do Not Reproduce

TOYOTA ENGINEERING STANDARD

TSM0500G

Attached Fig. 1

NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation..

7 / 9

Rev. 12 Oct. 2010

For Limited Distribution

Do Not Reproduce

TOYOTA ENGINEERING STANDARD

TSM0500G

Attached Fig. 2

NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation..

8 / 9

Rev. 12 Oct. 2010

For Limited Distribution

Do Not Reproduce

TOYOTA ENGINEERING STANDARD

TSM0500G

Attached Fig. 3

NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation..

9 / 9

Rev. 12 Oct. 2010